Plate 28. — 



Figs. 1-4. — Utricularia Lloydii Merl, an example of dimorphism. 



Fig. I. — The kind of trap found only on the leaves. 



Fig. 2. — Trap found only on the stolons. 



Fig. 3. — Door with single tripping bristle, from leaf trap. 



Fig. 4. — Door of stolon trap, devoid of tripping bristle. 



Fig. 5. — U. nana. 



Fig. 6. — Entrance of same, showing the two tripping bristles. 



Figs. 7-9. — U. globulariaefolia. 



Fig. 7. — Entrance. 



Figs. 8 and 9. — Two forms of trap (dimorphism). 



